html, body, .mui-content-self {
	height: 100%;
	width: 100%;
	overflow-y: hidden;
	margin: 0;
    padding: 0;
}
.bg {
    position: absolute;
    width: 100%;
    height: 100%;
    min-height: 400px;
    z-index: -1;
}
.bg img {
    width: 100%;
    height: 100%;
}
.up, .down {
	height: 50%;
	width: 100%;
	text-align: center;
	-webkit-transition: all .5s ease-in-out;
}
.up img, .down img {
	height: 100%;
	width: 100%;
} 
